{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x450a268657f1e9962fd3d01226527db1e8418f83038cdec1a6b2a7ddf343caea",
    "signature": "0x4af1cd39eef23719eb983c3879476523e8ef88261651f2b9d4456cc842e304502dc77516a999c08c10b0c463d15119d90cf3a84802c1033c83f35567bf301e531b",
    "signer": "0x6C7c1029D46CbDC7702F09b20e7497D64B9dD0DE",
    "userId": "886331336"
  }
}